Hudson Bay Capital Management’s Halozyme HALO Stock Holding History

Hudson Bay Capital Management’s Portfolio HALO Stock Details HALO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$10.6M	Buy	135,000 +5,000	+4%	+$341K	0.03%	351
2026 Q1	$8.4M	Buy	130,000 +5,000	+4%	+$352K	0.03%	354
2025 Q4	$8.41M	Buy	125,000 +121,672	+3,656%	+$8.18M	0.03%	375
2025 Q3	$244K	Sell	3,328 -13,423	-80%	-$892K	﹤0.01%	1003
2025 Q2	$871K	Buy	+16,751	New	+$953K	﹤0.01%	991
2020 Q2	–	Sell	-135,000	Closed	-$2.43M	–	513
2020 Q1	$2.43M	Sell	135,000 -50,000	-27%	-$949K	0.06%	246
2019 Q4	$3.28M	Buy	185,000 +9,800	+6%	+$170K	0.07%	229
2019 Q3	$2.72M	Buy	175,200 +200	+0.1%	+$3.29K	0.08%	220
2019 Q2	$3.01M	Buy	175,000 +30,000	+21%	+$484K	0.07%	235
2019 Q1	$2.33M	Hold	145,000	–	–	0.03%	435
2018 Q4	$2.12M	Buy	+145,000	New	+$2.31M	0.03%	497

Other funds holding HALO

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Hudson Bay Capital Management's HALO Position: Q2 2026 in Review

Hudson Bay Capital Management increased its Halozyme (HALO) stake by 3.8% in Q2 2026, buying an estimated $341K and bringing the position to 135,000 shares worth $10.6M. The position accounts for 0.03% of the portfolio, ranked #351.

Hudson Bay Capital Management first reported a position in HALO in Q4 2018 and has held it in 11 quarters since. 673 funds tracked by Wall St. Rank hold HALO as of Q2 2026.

Hudson Bay Capital Management held 135,000 shares of Halozyme worth $10.6M as of Q2 2026.
Hudson Bay Capital Management bought 5,000 Halozyme shares in Q2 2026, an estimated $341K.
Halozyme made up 0.03% of Hudson Bay Capital Management's portfolio in Q2 2026, its #351 holding.
Hudson Bay Capital Management first reported a position in Halozyme in Q4 2018 and has held it in 11 quarters since.
673 funds tracked by Wall St. Rank held Halozyme as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.